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Finding the Fourth Proportional to 74,416.80, 111,482.64 and 71,915.52

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Solution

The fourth proportional to 74,416.80, 111,482.64 and 71,915.52 is: 107,735.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,416.80 : 111,482.64 = 71,915.52 : x
  2. Step 2: Convert to fraction form
    74,416.80/111,482.64 = 71,915.52/x
  3. Step 3: Cross multiply
    74,416.80x = 111,482.64 × 71,915.52
  4. Step 4: Simplify right side
    74,416.80x = 8,017,332,026.57
  5. Step 5: Solve for x
    x = 8,017,332,026.57/74,416.80
  6. Step 6: Final answer
    x = 107,735.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.